High And Low Pressure Testing
Special tools and workshop equipment required
- Brake Pressure Gauge VAG1310A
Additional adapters may be needed in order to connect Brake Pressure Gauge VAG1310A to the caliper.
Before beginning:
Check brake system (brake master cylinder, brake hoses, brake lines and brake calipers) for proper seal and function.
High pressure testing:
-- Remove the bleed screw at one of the front brake calipers. Connect the Brake Pressure Gauge VAG1310A and bleed.
-- Insert the Brake Pedal Actuator VAG 1869/2 between the brake pedal and driver seat.
-- Apply pressure to brake pedal until the gauge indicates a pressure of 50 bar.
The pressure must not drop by more than 4 bar during the test period of 45 seconds.
If pressure drop is large, replace hydraulic unit.
Low pressure testing:
-- Push the Brake Pedal Actuator VAG 1869/2 back until the pressure gauge indicates 6 bar positive pressure.
-- The pressure must not drop by more than 1 bar during a test period of 3 minutes.
If pressure drop is large, replace hydraulic unit.